EP0475123B1 - Utilisation de 2-n-alkyle-1,2-benzisothiazolin-3-ones comme microbiocides techniques - Google Patents
Utilisation de 2-n-alkyle-1,2-benzisothiazolin-3-ones comme microbiocides techniques Download PDFInfo
- Publication number
- EP0475123B1 EP0475123B1 EP91113817A EP91113817A EP0475123B1 EP 0475123 B1 EP0475123 B1 EP 0475123B1 EP 91113817 A EP91113817 A EP 91113817A EP 91113817 A EP91113817 A EP 91113817A EP 0475123 B1 EP0475123 B1 EP 0475123B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- benzisothiazolin
- alkyl
- use according
- general formula
- ones
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 0 CC(C(*1)=C2C=CC=C1C2*CNF)=O Chemical compound CC(C(*1)=C2C=CC=C1C2*CNF)=O 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
Definitions
- the invention relates to the use of 2-n-alkyl-1,2-benzisothiazolin-3-ones as technical microbicides.
- Microbiocidal substances are therefore added to these materials to maintain their value, although the environmental compatibility or toxicology of the agents used has so far been neglected. Chlorinated phenols and tributyltin esters have therefore been used essentially. For ecological reasons, however, the use of these substances must be restricted. There is therefore a great need for water-insoluble, non-volatile, broadly antifungal, less toxic and less harmful to the environment, which are used to protect wood, leather, textiles, paints, plaster, technical aqueous formulations, paper, roof coatings, Plastics, etc. can be used.
- 2-alkyl-4-isothiazolin-3-ones have already been proposed for the fungicidal treatment of industrial materials.
- 2-n-octyl-isothiazolin-3-one is used to protect facade paints, leather, wood, etc. It is disadvantageous that this compound is not stable to alkali and is hydrolyzed at pH values above 9 and is therefore inactivated. In addition, it is easily washed out of the material to be protected by rainwater, so that the protection is not as long as desired.
- the object of the present invention is to provide compounds which have long-lasting high fungicidal activity, can be used in technical systems without adversely affecting their properties and which at the same time no longer have the disadvantages mentioned above.
- the compounds of general formula I to be used according to the invention are notable for high activity and their broad spectrum of activity against yeasts, such as e.g. Candida albicans, Torula utilis, Saccharomyces cerevisiae, molds, such as e.g. Cladosporium resinae, Aspergillus niger, Sclerophoma pityophila, Scopulariopsis brevicaulis or wood-fading fungi, e.g. Aureobasidium pullulans from. They are therefore outstandingly suitable for protecting technical materials against fouling with fungi and yeasts, have a significantly higher activity against mold and are much more resistant to leaching than the N-alkyl-1,2-benzisothiazoline described so far for this application.
- the compounds of general formula I can also be used in fields of application, such as, for example, in coatings on extremely alkaline concrete substrates with high wash-out loads, in which the 2-octylisothiazolin-3-one corresponding to the prior art is hydrolyzed and ineffective. They can therefore be particularly advantageous in materials such as facade coatings, roof tile coatings, cooling lubricants, silicate paints and other alkaline technical systems can be used as fungicides.
- a crop protection fungicide is expected to have selective activity and good degradability, while a fungicide should be as broadly effective as possible for technical products and should in part protect the materials over several years.
- Preferred formulations are solutions, but aqueous emulsions or water-dilutable emulsion concentrates are also advantageous.
- the choice of solvent for solutions is not critical.
- Aromatic petrol, xylene, trimethylbenzene are particularly suitable for non-polar systems; Ketones such as acetone, cyclohexanone, isophorone, methyl isobutyl ketone; Ethers and glycol ethers, such as, for example, diisopropyl ether, dimethoxyethane, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether; Esters such as, for example, ethyl acetate, butyl acetate; Glycols, their mono- and diethers or their mono- or diesters.
- the formulations contain the compounds of the general formula I preferably in amounts of 1 to 98% by weight, particularly preferably in amounts of 10 to 50% by weight.
- the application concentration depends on the type of material to be protected, the leaching load and the microbial contamination to be expected and is preferably between 0.005 and 3%, particularly preferably between 0.05 and 1%, based on the material to be protected.
- a particularly advantageous use according to the invention is the protection of plastics containing polyvinyl chloride from attack by Scopulariopsis brevicaulis.
- This fungus preferably grows on polyvinyl chloride and is able to reductively form phosphate plasticizers, phosphine, arsenic compounds arsan and antimony compounds stilban (Richardsen, Guernsey).
- Phosphorus, arsenic and antimony compounds are often used as stabilizers, e.g. added as flame retardant PVC. Since the corresponding hydrogen compounds are highly toxic, fouling with Scopulariopsis brevicaulis must be prevented.
- the compounds of the general formula I are outstandingly suitable for this purpose, since they are highly active against Scopulariopsis brevicaulis and are not destroyed by the temperature loads which occur during the calendering of the plastics.
- Another advantageous use according to the invention is the use in non-polar, hydrophobic media, such as e.g. Textile waterproofing agents, silicone oils or petrol. 2-Octylisothiazolin-3-one cannot be used in these media.
- the compounds of general formula I can also be used in combination with other known antimicrobial substances.
- examples include: benzimidazolylmethyl carbamate, quaternary ammonium acid (quats), thiocyanatomethylthiobenzothiazole, methylene bisthiocyanate, iodopropargylbutylcarbamate, 2-octyl-isothiazolin-3-one, 2-methylthio-4-tertiarybutylamino-6-cyclopropane Dichlofluanid, captan, folpet.
- benzimidazolylmethyl carbamate quaternary ammonium acid (quats)
- thiocyanatomethylthiobenzothiazole methylene bisthiocyanate
- iodopropargylbutylcarbamate 2-octyl-isothiazolin-3-one
- the microbicidal effectiveness is determined by determining the minimum inhibitory concentration (MIC values).
- the MIC value indicates the lowest concentration of an active ingredient at which the growth of the test germ is still completely inhibited.
- graduated amounts of active ingredient are dissolved in liquid culture media at 50 ° C, the culture media are then solidified by cooling, infected with the test strains and incubated.
- a modified method of testing the bacteriostatic effect using the dilution test is therefore used (cf. guidelines for testing chemical disinfectants, Gustav Fischer Verlag, Stuttgart, 2nd edition, 1969, pages 5-6).
- the color-coated test specimens (series C) were soaked in tap water for 96 hours, using 63 l of water per m2. The leaching water was changed every 24 hours.
- the active substances to be tested are incorporated in graded concentrations in a commercially available styrene acrylate paint.
- the biological test is carried out on round filter paper (No. 597 from Schleicher & Schüll, diameter 5.5 cm). For this purpose, the filters were coated on one side with the modified emulsion paint to be tested.
- a fresh concrete was made by mixing 71.6% screed sand (approx. 1.6% moisture), 18.9% Portland cement according to DIN 1164 and 9.6% tap water, which was filled into a petri dish and the surface with the spatula was smoothed.
- the concrete is compacted by tapping the petri dish carefully.
- the freshly painted paper filters are immediately placed on the freshly made moist concrete and pressed on with the help of a spatula.
- the petri dish was sealed with an adhesive tape (e.g. tape) to prevent it from drying out.
- test specimens were then stored in a heating cabinet at 60 ° C. for 48 hours. The mixture was then allowed to cool to room temperature and then the moist filter was carefully lifted off the concrete surface with the spatula. The filters were then air dried on filter paper for 16 hours. To simulate leaching by rainwater, the test specimens coated with paint were watered with tap water for 48 hours (series "loaded” in the table), 60 l water per m2 being used. The leaching water was changed every 24 hours.
- dioctyl phthalate was mixed with 4% 2-n-octyl-1,2-benzisothiazolin-3-one and heated to 200 ° C. for 15 minutes to simulate the temperature during the manufacture of PVC films.
- Freshly tanned leather (wet blue) was immersed in aqueous baths, each containing 0.01% of the fungicides to be tested.
- the fungicidal effect is on the leather sections tested on solid nutrient media according to ASTM D 4576 and evaluated according to the scheme given there on a scale from 0 to 4.
Claims (6)
- Utilisation selon la revendication 1, pour protéger des revêtements de façades, des revêtements de tuiles, des lubrifiants-réfrigérants, des peintures aux silicates et d'autres systèmes techniques alcalins, ainsi que pour la protection du bois, du cuir, des semi-produits à base de cuir, des peintures pour façades, des systèmes d'enduits, des peintures sur bois, des plastiques tels que le PVC, des polyuréthannes ou du polybutylène, des enduits plastiques, des textiles, des circuits fermés d'eaux industrielles, des masses d'étanchéité siliconées, des fluides d'usinage des métaux, des colles et des carburants.
- Utilisation selon les revendications 1 et/ou 2, caractérisée en ce que le PVC est protégé contre une infestation par Scopulariopsis brevicaulis.
- Utilisation selon l'une ou plusieurs des revendications 1 à 3, caractérisée en ce que le composé de formule I est utilisé à des concentrations de 0,005 à 3 % et tout particulièrement de 0,05 à 1 % par rapport au matériau à protéger.
- Utilisation selon l'une ou plusieurs des revendications 1 à 4, caractérisée en ce que le composé de formule générale I est utilisé sous forme d'une solution.
- Utilisation selon l'une ou plusieurs des revendications 1 à 5, caractérisée en ce que le composé de formule générale I est utilisé en combinaison avec d'autres matières actives antimicrobiennes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4027378A DE4027378A1 (de) | 1990-08-30 | 1990-08-30 | Verwendung von 2-n-alkyl-1,2-benzisothiazolin-3-onen als technische mikrobiozide |
DE4027378 | 1990-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0475123A1 EP0475123A1 (fr) | 1992-03-18 |
EP0475123B1 true EP0475123B1 (fr) | 1995-01-04 |
Family
ID=6413193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91113817A Expired - Lifetime EP0475123B1 (fr) | 1990-08-30 | 1991-08-17 | Utilisation de 2-n-alkyle-1,2-benzisothiazolin-3-ones comme microbiocides techniques |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0475123B1 (fr) |
AT (1) | ATE116522T1 (fr) |
DE (2) | DE4027378A1 (fr) |
ES (1) | ES2069142T3 (fr) |
GR (1) | GR3015576T3 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9304903D0 (en) * | 1993-03-10 | 1993-04-28 | Zeneca Ltd | Compounds,preparation and use |
DE4403838A1 (de) * | 1994-02-08 | 1995-08-10 | Bayer Ag | 1,3,2-Benzodithiazol-1-oxid-Derivate |
GB9500856D0 (en) * | 1995-01-17 | 1995-03-08 | Zeneca Ltd | Composition and use |
DE19704158A1 (de) * | 1997-02-04 | 1998-08-06 | Fischer Artur Werke Gmbh | Polyurethanzusammensetzung mit verbesserter langzeitresistenz gegen Mikroorganismenbefall |
EP1072192A1 (fr) * | 1999-07-27 | 2001-01-31 | Basf Aktiengesellschaft | Polyuréthanes thermoplastiques |
GB0012786D0 (en) | 2000-05-26 | 2000-07-19 | Avecia Ltd | Method and compositions |
DE10218482A1 (de) * | 2002-04-25 | 2003-11-20 | Sto Ag | Mittel zur Behandlung von mit Algen und/oder Pilzen befallenen Flächen |
DE102005044855A1 (de) * | 2005-09-21 | 2007-03-29 | Clariant Produkte (Deutschland) Gmbh | Biozide Zusammensetzungen |
CN112409637A (zh) * | 2020-11-12 | 2021-02-26 | 广元瑞峰新材料有限公司 | 一种软质塑料专用的环保型防霉抗菌剂 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB848130A (en) * | 1958-03-14 | 1960-09-14 | Ici Ltd | Benzisothiazolones |
US3517022A (en) * | 1967-10-03 | 1970-06-23 | Rohm & Haas | Certain 2-carbamoyl-1,2-benzisothiazolones |
SE392103B (sv) * | 1970-04-27 | 1977-03-14 | Sherwin Williams Co | Sett att framstella 1,2-bensisotiazolin-3-oner |
US4396413A (en) * | 1971-05-12 | 1983-08-02 | Rohm And Haas Company | Metal salt complexes of 3-isothiazolones as effective biocidal agents |
GB1531431A (en) * | 1975-01-29 | 1978-11-08 | Ici Ltd | Method for the control of micro-organisms |
-
1990
- 1990-08-30 DE DE4027378A patent/DE4027378A1/de not_active Withdrawn
-
1991
- 1991-08-17 ES ES91113817T patent/ES2069142T3/es not_active Expired - Lifetime
- 1991-08-17 EP EP91113817A patent/EP0475123B1/fr not_active Expired - Lifetime
- 1991-08-17 AT AT91113817T patent/ATE116522T1/de not_active IP Right Cessation
- 1991-08-17 DE DE59104132T patent/DE59104132D1/de not_active Expired - Fee Related
-
1995
- 1995-03-30 GR GR950400749T patent/GR3015576T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
ATE116522T1 (de) | 1995-01-15 |
DE4027378A1 (de) | 1992-03-05 |
GR3015576T3 (en) | 1995-06-30 |
DE59104132D1 (de) | 1995-02-16 |
ES2069142T3 (es) | 1995-05-01 |
EP0475123A1 (fr) | 1992-03-18 |
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